Backend Engineer

What You’ll Do

• Build and own backend systems that power Upriver’s AI agents and autonomous workflows.
• Work hands-on with cutting-edge agent architectures and applied AI, helping invent how these systems are built and used in production.
• Design scalable, reliable services for real customers, from data ingestion to orchestration and APIs.
• Deliver real customer value end-to-end: take features from idea to production, see them used by customers, and iterate based on real-world impact.

What We’re Looking For

• Strong backend engineering experience
• Experience building production systems, and data-heavy services.
• Comfortable operating independently and taking full ownership.
• Product-minded, pragmatic, and excited about building from zero.

Why Upriver

• Define a new category: Be part of a team figuring out how AI agents actually work inside real data platforms, and build a category leader product.
• High ownership, high trust: You’ll make real architectural and product decisions early on.
• Top-tier team: Work with exceptional engineers at a very high bar.
• Join at the inflection point: Strong early traction, a fresh seed round, and the opportunity to grow rapidly with the company as it scales.